I have spent some time looking for handguards for my KLR and finally found one that i was able to fit properly and without too much hassle. These are Acerbis X-Factory handguards. :
Acerbis ACERBIS HANDGUARDS X-FACTORY, BLACK
Acerbis X-Factory Handguard Kit – Sierra Motorcycle Supply
ACERBIS X-FACTORY handguards installation guide step by step - YouTube
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Acerbis X-Factor Handguards Review | The Loam Wolf
Acerbis X Factory hand guards looking sweet! : r/CRF450L